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MXPA05004491A - Formation imaging while drilling in non-conductive fluids. - Google Patents

Formation imaging while drilling in non-conductive fluids.

Info

Publication number
MXPA05004491A
MXPA05004491A MXPA05004491A MXPA05004491A MXPA05004491A MX PA05004491 A MXPA05004491 A MX PA05004491A MX PA05004491 A MXPA05004491 A MX PA05004491A MX PA05004491 A MXPA05004491 A MX PA05004491A MX PA05004491 A MXPA05004491 A MX PA05004491A
Authority
MX
Mexico
Prior art keywords
current
electrode
electrodes
sensor pad
array
Prior art date
Application number
MXPA05004491A
Other languages
Spanish (es)
Inventor
Philip Cheung
Original Assignee
Schlumberger Technology Bv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schlumberger Technology Bv filed Critical Schlumberger Technology Bv
Publication of MXPA05004491A publication Critical patent/MXPA05004491A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
    • G01V3/20—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with propagation of electric current
    • G01V3/24—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with propagation of electric current using ac

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

A resistivity tool for investigating a wall of a borehole drilled with a non-conductive mud includes a tool body adapted to be incorporated in a logging-while-drilling tool assembly; a resistivity sensor disposed on the tool body, wherein the resistivity sensor comprises a sensor pad supporting a current injector electrode, a current return electrode, and an array of measurement electrodes; and a circuitry for controlling current injection from the current injector electrode and for measuring voltage difference between electrodes in the array of measurement electrodes, wherein the current injector electrode and the current return electrode are disposed near opposite ends of the sensor pad and the array of measurement electrodes is disposed between the current injector electrode and the current return electrode, wherein the sensor pad is constructed of an insulating material and includes a conductive shielding member, or wherein the sensor pad is constructed of a conducting material and includes insulating sections around the electrodes.
MXPA05004491A 2004-05-12 2005-04-27 Formation imaging while drilling in non-conductive fluids. MXPA05004491A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/844,173 US7242194B2 (en) 2000-04-07 2004-05-12 Formation imaging while drilling in non-conductive fluids

Publications (1)

Publication Number Publication Date
MXPA05004491A true MXPA05004491A (en) 2006-02-13

Family

ID=34620800

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA05004491A MXPA05004491A (en) 2004-05-12 2005-04-27 Formation imaging while drilling in non-conductive fluids.

Country Status (8)

Country Link
US (1) US7242194B2 (en)
CN (1) CN1696473B (en)
CA (1) CA2503816C (en)
DE (1) DE102005021230A1 (en)
FR (1) FR2870288B1 (en)
GB (1) GB2414081B (en)
MX (1) MXPA05004491A (en)
RU (1) RU2390804C2 (en)

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Also Published As

Publication number Publication date
DE102005021230A1 (en) 2005-12-01
RU2005114234A (en) 2006-11-20
FR2870288A1 (en) 2005-11-18
GB0507344D0 (en) 2005-05-18
US7242194B2 (en) 2007-07-10
RU2390804C2 (en) 2010-05-27
CA2503816A1 (en) 2005-11-12
US20040245991A1 (en) 2004-12-09
FR2870288B1 (en) 2013-12-27
GB2414081B (en) 2007-05-23
GB2414081A (en) 2005-11-16
CN1696473A (en) 2005-11-16
CN1696473B (en) 2012-02-08
CA2503816C (en) 2008-09-02

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